Friday, November 16, 2012

"98B" - moving West now

1:30pm, "98B" - moving West now.
Pressure around 1007mb
Here's the latest poistion plot on map.


NOGAPS model prediction is coming into effect now. It's too early to predict that whether the system will track West or not. But latest NOGAPS model still predicts a Deep Depression (or) Cyclone on 19-Nov over W.Bay tracking towards N.Tamilnadu & S.Andhra coast.


Latest JTWC report at 8:30am IST
--------------------------------------------------------

AN AREA OF CONVECTION HAS PERSISTED NEAR 13.6N 89.0E, 
APPROXIMATELY 500 NM EAST OF CHENNAI, INDIA. RECENT ANIMATED 
INFRARED SATELLITE IMAGERY SHOWS BUILDING DEEP CONVECTION OVER THE 
EASTERN BAY OF BENGAL. SCATTEROMETER DATA FROM 151814Z INDICATES A 
MONSOON DEPRESSION-LIKE WIND FIELD WITH 05-10 KNOT CENTRAL WINDS 
SURROUNDED BY 20-25 KNOT WINDS ON THE EASTERN AND WESTERN 
PERIPHERIES. UPPER-LEVEL ANALYSIS DEPICTS THE DISTURBANCE UNDERNEATH 
THE SUBTROPICAL RIDGE (STR) AXIS IN AN AREA OF LIGHT (05-10 KNOT) 
VERTICAL WINDSHEAR (VWS). IN ADDITION TO THE GOOD DIVERGENCE BEING 
PRODUCED BY THE STR AXIS, THERE IS MODERATE SPEED DIVERGENCE INTO 
THE MID-LATITUDE WESTERLIES TO THE NORTH. HOWEVER, THE 850MB 
VORTICITY SIGNATURE IS VERY ELONGATED NORTHEAST TO SOUTHWEST; 
INDICATIVE OF THE GENERAL TROUGHING IN THE AREA BUT CURRENTLY NOT 
SHOWING ANY SIGNATURE OF A WELL DEVELOPED CIRCULATION. SEA SURFACE 
TEMPERATURES ARE EXTREMELY CONDUCIVE FOR TROPICAL CYCLOGENESIS AT 28-
30 DEGREES CELSIUS. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 
10 TO 15 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 
1007 MB. THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL 
CYCLONE WITHIN THE NEXT 24 HOURS IS LOW


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